Rehn Lab 7: Lenses and Optics Pre-Lab Start by reading the ... - PhET

Rehn Lab 7: Lenses and Optics Pre-Lab Start by reading the ... -

Startbyreadingthe entire lab and prelab. Lab 7: LensesandOpticsPre-Lab When a light ray strikes a smooth interface separating two transparent materials (like air, glass, or water), the wave is partly reflected and partly refracted (or transmitted) into the second material. Startby downloading and opening thePhET Bending Light sim we will be using: http://phet.colorado.edu/en/simulation/bending-light Analysis: 1) What do you notice about the angle of the reflected light in comparison with the angle of the incident light? (Note that there is a protractor on thePhET sim that you can use to measure angles!) 2) Now let’s look at the refracted light. In general, the relationship between the angles of refracted light and a property of the media is given by: Here corresponds to the angle in the top media and corresponds to the angle in the bottom media. Both of these angles are measured from the z-axis down to the light (or up to the light in the media below). Similarly, n1 and n2 are the indices of refraction of the top and bottom material, respectively. (These numbers are shown on thePhET sim.) Now find a way to verify the relation given above on thePhET sim. You will want to take at least three data points at either different angles or different indices of refraction (you get to choose which!). Here is a table to help you organize your work: Show all of your work in doing this and give a brief (2-3 sentences) description of the method you used to complete this problem. Does this make sense? Describe what the equation/ relation means in words. Part 2: Prism Break (EXTRA CREDIT) Rehn